Czech J. Food Sci., 2017, 35(4):311-320 | DOI: 10.17221/84/2017-CJFS

Growth inhibition of foodborne pathogens in camel milk: Staphylococcus aureus, Listeria monocytogenes, Salmonella spp. and E. coli O157:H7Food Microbiology and Safety

Aisha Abusheliabi1, Murad A. Al-Holy2, Hind Al-Rumaithi3, Sufian Al-Khaldi4, Anas A. Al-Nabulsi5, Richard A. Holley6, Mutamed Ayyash1*
1 Food Science Department, College of Food and Agriculture, United Arab Emirates University, Al Ain, United Arab Emirates
2 Department of Clinical Nutrition and Dietetics, Faculty of Allied Health Sciences, Hashemite University, Zarqa, Jordan
3 Abu Dhabi Food Control Authority (ADFCA), Abu Dhabi, United Arab Emirates
4 Office of Regulatory Science and Innovation, US-Food and Drug Administration, Silver Spring, USA
5 Department of Nutrition and Food Technology, Jordan University of Science and Technology, Irbid, Jordan 6Department of Food Science, University of Manitoba, Winnipeg, Canada

The growth behaviour of foodborne pathogens (Staphylococcus aureus, Listeria monocytogenes, E. coli O157:H7 and Salmonella spp.) was investigated in pasteurised camel milk and compared with pasteurised bovine milk at different incubation temperatures. This study also aimed to compare the growth patterns of these four foodborne pathogens in pasteurised and raw camel milk. Pasteurised or raw camel milk and pasteurised bovine milk were separately inoculated with a cocktail of three strains of each foodborne pathogen. The inoculated milk samples were incubated at 10, 25, and 37°C. The total bacterial count (TBC) in raw milk and the total thermoduric bacteria count (TDB) in pasteurised milk samples were monitored. Greater growth inhibition rates of four pathogens were obtained for the pasteurised camel milk compared to the pasteurised bovine milk. Raw and pasteurised camel milk exerted bacteriostatic effect against all tested pathogens, particularly for the first 8 h of incubation in milk at the different temperatures. Pasteurised camel milk exerted an inhibitory activity that was equivalent to that of raw camel milk.

Keywords: antimicrobial activity; pasteurisation; bovine milk; growth behaviour

Published: August 31, 2017  Show citation

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Abusheliabi A, Al-Holy MA, Al-Rumaithi H, Al-Khaldi S, Al-Nabulsi AA, Holley RA, Ayyash M. Growth inhibition of foodborne pathogens in camel milk: Staphylococcus aureus, Listeria monocytogenes, Salmonella spp. and E. coli O157:H7. Czech J. Food Sci. 2017;35(4):311-320. doi: 10.17221/84/2017-CJFS.
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